Question

1. In the following pattern, draw the next two figures.
   
2. Construct a table to describe the figures in the above pattern.
3. If n denotes the number of figures and L denotes the number of matches, find L in terms of n.
4. Find how many matches are required to make the :
   (1) 12th figure
   (2) 20th figure

Answer 1

1. 

2. n	1	2	3	4	5
   L	2	4	6	8	10

3. L = 2n
   (1) 12th figure 12th figure has = 2 x 12 = 24
   (2) 20th figure = 2 x 20 = 40